United Kingdom, Sept. 15 -- Sienna Miller has "completely lost" her fashion sense since becoming a mother.

The 44-year-old actress gave birth to her third child, a little boy, in April this year, but admitted that motherhood in her later years has had a negative impact on her sense of style - for which she has become famous.

She told Vogue: "I have completely lost my fashion sense. I've been pregnant or breastfeeding for nearly four years, and I think something happens to the brain - or you're so f****** tired - that you sacrifice your identity.

"You're just 'mother'... and not in the Gen-Z way, as much as I would like to be."

Sienna added that while she knows she has a "good aesthetic", she's been turning to her stylish friends for h...